From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.14) Gecko/20080404 Firefox/2.0.0.14 Description of problem: I try to boot over pxe kernel-2.6.18-92.1.1.el5 and kernel-2.6.18-92 on SOEKRIS Net 5501 "communication computer" (http://www.soekris.com/net5501.htm). I try to boot it from CF (Compact Flash - installed on other computer). I get kernel panic during start: ############################################################################ Linux version 2.6.18-92.1.1.el5 (brewbuilder at hs20-bc1-7.build.redhat.com) (gcc v ersion 4.1.2 20071124 (Red Hat 4.1.2-41)) #1 SMP Thu May 22 09:01:29 EDT 2008 BIOS-provided physical RAM map: [...] TCP bic registered Initializing IPsec netlink socket NET: Registered protocol family 1 NET: Registered protocol family 17 powernow-k8: Processor cpuid 5a2 not supported BUG: unable to handle kernel NULL pointer dereference at virtual address 0000000 0 printing eip: c041041c *pde = 00000000 Oops: 0000 [#1] SMP last sysfs file: Modules linked in: CPU: 0 EIP: 0060:[<c041041c>] Not tainted VLI EFLAGS: 00010202 (2.6.18-92.1.1.el5 #1) EIP is at powernowk8_init+0x5e/0x1c2 eax: 00000000 ebx: 00000000 ecx: 0000000e edx: 00000020 esi: 00000000 edi: c06242c3 ebp: 00000000 esp: c147cfa0 ds: 007b es: 007b ss: 0068 Process swapper (pid: 1, ti=c147c000 task=c147daa0 task.ti=c147c000) Stack: 00000000 c071bbe8 00000000 c06ec5a8 c06e7fd8 c0404dee 00000202 c06ec42b 00000000 00000000 00000000 00000000 00000000 00000000 c06ec42b 00000000 00000000 c0405c3b 00000000 00000000 00000000 00000000 00000000 00000000 Call Trace: [<c06ec5a8>] init+0x17d/0x24a [<c0404dee>] ret_from_fork+0x6/0x1c [<c06ec42b>] init+0x0/0x24a [<c06ec42b>] init+0x0/0x24a [<c0405c3b>] kernel_thread_helper+0x7/0x10 ======================= Code: 83 3d 20 41 67 c0 01 75 40 83 3d 84 d4 76 c0 00 75 37 b8 01 00 00 00 bf c3 42 62 c0 e8 0a 15 19 00 b9 0f 00 00 00 89 c6 49 78 08 <ac> ae 75 08 84 c0 75 f5 31 c0 eb 04 19 c0 0c 01 85 c0 75 0a c7 EIP: [<c041041c>] powernowk8_init+0x5e/0x1c2 SS:ESP 0068:c147cfa0 <0>Kernel panic - not syncing: Fatal exception ############################################################################ I recompiled kernel from kernel-2.6.18-92.1.1.el5.src.rpm with changeing only one things: original RHEL5.2 kernel config: "CONFIG-X86-POWERNOW_K8=y" modified RHEL5.2 kernel config "CONFIG-X86-POWERNOW_K8=m" In result during boot powernow-k8 doesn't try to load and OS start and work perfect, but I prefer use RedHat kernel. If I load module powernow-k8.ko in recompiled kernel I get kernel panic and oops too, so I sure the problem is in interaction this module with CPU (bios?). The CPU is AMD Geode LX 800, 500 Mhz single chip processor with CS5536 companion chip. Please see details on http://www.soekris.com/net5501.htm Version-Release number of selected component (if applicable): kernel-2.6.18-92.1.1.el5 , kernel-2.6.18-92 How reproducible: Always Steps to Reproduce: 1. Get SOEKRIS net5501 "communication computer (small server, router) or other PC computer with AMD Geode LX CPU. 2. Insert SATA or PATA hdd or CF with installed RHEL5 with configured console kernel parameter in grub: kernel /vmlinuz-2.6.18-92.1.1.el5 ro root=/dev/VolGroup00/LogVol00 console=ttyS0,19200n8 or try boot RHEL5.2 kernel-2.6.18-92.1.1.el5.src.rpm over network via PXE 3. Try to boot Actual Results: I get kernel panic during start: ############################################################################ Linux version 2.6.18-92.1.1.el5 (brewbuilder at hs20-bc1-7.build.redhat.com) (gcc v ersion 4.1.2 20071124 (Red Hat 4.1.2-41)) #1 SMP Thu May 22 09:01:29 EDT 2008 BIOS-provided physical RAM map: [...] TCP bic registered Initializing IPsec netlink socket NET: Registered protocol family 1 NET: Registered protocol family 17 powernow-k8: Processor cpuid 5a2 not supported BUG: unable to handle kernel NULL pointer dereference at virtual address 0000000 0 printing eip: c041041c *pde = 00000000 Oops: 0000 [#1] SMP last sysfs file: Modules linked in: CPU: 0 EIP: 0060:[<c041041c>] Not tainted VLI EFLAGS: 00010202 (2.6.18-92.1.1.el5 #1) EIP is at powernowk8_init+0x5e/0x1c2 eax: 00000000 ebx: 00000000 ecx: 0000000e edx: 00000020 esi: 00000000 edi: c06242c3 ebp: 00000000 esp: c147cfa0 ds: 007b es: 007b ss: 0068 Process swapper (pid: 1, ti=c147c000 task=c147daa0 task.ti=c147c000) Stack: 00000000 c071bbe8 00000000 c06ec5a8 c06e7fd8 c0404dee 00000202 c06ec42b 00000000 00000000 00000000 00000000 00000000 00000000 c06ec42b 00000000 00000000 c0405c3b 00000000 00000000 00000000 00000000 00000000 00000000 Call Trace: [<c06ec5a8>] init+0x17d/0x24a [<c0404dee>] ret_from_fork+0x6/0x1c [<c06ec42b>] init+0x0/0x24a [<c06ec42b>] init+0x0/0x24a [<c0405c3b>] kernel_thread_helper+0x7/0x10 ======================= Code: 83 3d 20 41 67 c0 01 75 40 83 3d 84 d4 76 c0 00 75 37 b8 01 00 00 00 bf c3 42 62 c0 e8 0a 15 19 00 b9 0f 00 00 00 89 c6 49 78 08 <ac> ae 75 08 84 c0 75 f5 31 c0 eb 04 19 c0 0c 01 85 c0 75 0a c7 EIP: [<c041041c>] powernowk8_init+0x5e/0x1c2 SS:ESP 0068:c147cfa0 <0>Kernel panic - not syncing: Fatal exception ############################################################################ Expected Results: Normal start of kernel and RHEL5.2 OS. I should get login prompt. Additional info: This CPU/computer boots with RHEL4.6 because RHEL4.6 has powernow-k8 in module, not in kernel itself.
Created attachment 310160 [details] Full log of kernel load with panic, OOPS and crash I try to boot over PXE. I get this same log when I boot locally from CF or HDD.
Przemyslaw, does your system support DMI? P.
Closing -- in NEEDINFO for over a month and a half. P.